【摘要】2019-2020学年高中英语 Unit 3 The World online课时跟踪练(二)牛津译林版选修7 Ⅰ.单词拼写 1.Once a fire breaks out, sound the fire alarm (警报) and then leave the hotel quickly. 2.The doctor gave me explicit (清楚明白的) instructions on when and how to take the medicine. 3.According to the statistics (统计数字), young drivers are more likely to have accidents than older drivers. 4.Considering its diverse (多种多样的) cultures, it is an att